Explosive-engine.



B. B. DORR. EXPLOSIVE ENGINE.

H APPLIOATION FILED MAY 18, 1912. 1 079,345 Q Patented Nov. 25, 1913.

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awe/whoa COLUMBM PLANOGRAPH CO..WASHIN8TON. D. C.

B. B. DORE.

EXPLOSIVE ENGINE.

APPLIOATION FILED MAY 18, 1912.

Patented N0v. 25, 1913.

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H (IO-,WASHINGTON n c UNITED STATES PATENT OFFICE.

BENJAMIN BLAKE DORR, OF WEST TOLEDO, OHIO.

EXPLOSIVE-ENGINE.

T 0 all whom it may concern:

Be it known that I, BENJAMIN B. Donn, a citizen of the United States of America, residing at West Toledo, in the county of Lucas and State of Ohio, have invented new and useful Improvements in- Explosive-lingines, of which the following is a spec1f1cation.

This invention relates to improvements in explosive engines and has particular application to internal combustion engines of that type employing a rotary valve on the head of the cylinder or cylinders to admit and exhaust the gases to and from the cylinder or cylinders.

In carrying out my presentinvent ion, it is my purpose to provide an engine which shall; include a detachable water jacketed rotary valve casing secured to the. upper end of the cylinder and forlning the head thereof, such casing and cylinderpresenting, in effect, an integral structure.

In another aspect, my invention embodies an explosive engine wherein the magneto, water pump and rotary valve thereof Wlll be driven from the crank shaft of the engine to obtain synchronous and simultaneous movement of such parts, means being provided totake up any slack or play in the driving mechanism; I

\Vith the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the appended claims.

In the accompanying drawings: Figure 1 is a side elevation of a multiple cylinder engine embodying my improvements. Fig. 2 is a transverse sectional view through one of the cylinders. Fig. 3 is a front elevation of the engine. Fig. 4c is a detail planview of the valve casing removed from the engine cylinders, parts being broken away. Fig. 5 is an enlarged detail perspectiveview of the means for taking up slack or play in the driving mechanism. Fig. 6 is a sectional view through a detail of the invention.

Similar reference characters designate like parts throughout the several views.v

In the present instance, I have shown my improvement as applied to a multiple cylinder engine, four cylinders being shown in this embodiment of the invention. It is to be understood, however, that my improvement in its useful application is not Specification of Letters Patent.

Application filed May 18, 1912.

Patented Nov. 25, 1913.

Serial No. 698,233.

limited to an engine embracing any particular number of cylinders, as the invention may be modified and varied to suit the requirements and circumstances in any particular case so as to utilize my improvement to the best advantage.

Referring now to the accompanying drawings in detail, the explosive engine herein shown is of the internal combustion type and embraces a-crank case or chamber 1, cylinders 2 in each of which latter is mounted for reciprocation, a piston 3 connected through the medium of a pitman or piston rod 4 to the engine crank shaft 5 journaled in the opposite end walls of the crank case and common to the pistons of all the cylinders, as usual.

Each cylinder 2, is provided with a water jacket 6 and such jacket and cylinder are open at'their upper ends and formed intogral with the outer wall of the water jacket is an apertured flange or ear 7 projecting laterally of the wall. Mounted upon the upper open ends of all the cylinders and extending longitudinally of the engine and forming, to all intents and purposes, the head of the cylinder, is a valve casing 8 composed of two longitudinally extending companion sections 9 and 10 having their proximate surfaces spaced a suitable distance from each other as at 11 and concaved as at 12, 12 to form a circular chamber within which chamber is mounted a rotating valve 13 provided with diametrically arranged inlet and exhaust ports 14 and 15 for each cylinder, the ports of each cylinder and those of adjacent cylinders being separated one from the other through the medium of packing rings'lti disposed within grooves formed circumferentially of the valve and between the ports so as to prevent communication between the exhaust and intake sides of the valve of a particular cylinder or adjacent cylinders. Suitable conduits are connected to the upper end of the valve chamber 8 and have communication with the valve through the space 11 formed between the complementary sections of the casing and, likewise, the space between the companion sections of the casing at the opposite side ofsuch casing permit communication to be established between the conduits and the interior of the cylinder or cylinders, as will be readily understood, the ports 14: and 15, of course, being arranged in such manner as to facilitate the intake and exhaust of the gases to and from the cylinder or cylinders respectively at the proper time, by way of the inlet and exhaust conduits 14 and 15 respectively.

Each section 9 and 10, of the valve casing 8 is hollowed out interiorly and longitudinally of its length to provide a coo-ling chamber 17 having communication with the water jacket 6 of the engine cylinder, or cylinders, through the medium of a longitudinal slot 18 formed in the bottom of each section of the casing. Thus, the valve chamber 8 will be at all times supplied with water or other cooling medium to cool the valve and at the same time performs the service of a cylinder head. Each section of the chamber 8, is provided at its lower longitudinal outer edge with apertured ears or flanges 19 cooperating with the ears 7 of the cylinder and adapted to receive bolts 20 so as to se curely hold the parts assembled.

One end of the valve 13 terminates beyond the respective end of the casing in a stem 21 and upon this stem is keyed a pulley or sprocket wheel 22 by means of which rotary motion is imparted to the valve.

Secured to the upper surface of the crank case or chamber 1 and adjacent one end thereof and at the opposite sides of the engine are brackets 23, 23 which may be formed integral with the crank case or detachably connected thereto, as desired. Mounted upon one of these brackets 23 is a magneto or dynamo'electric machine 24.- of any suitable or preferred construction and upon the opposite bracket is mounted a rotary pump 25 of any preferred or well known construction and the magneto and pump are each provided with a driving pulley or sprocket wheel 26, 26 arranged beyond the plane of the respective end of the engine and to one side of the plane of the pulley or sprocket 22 upon the stem 21 of the valve. Similarly, the end of the crank shaft at this end of the engine is projected outwardlv of the crank case and equipped with a relatively large driving pulley or sprocket 27. Trained over these pulleys or sprocket wheels 22, 26, 26, and 27 is an endless chain, belt or the like 28 adapted to be driven from the sprocket wheel 27 upon the crank shaft to impart movement to the pulleys or sprocket wheels upon the magneto, pump and valve stem so as to drive the same synchronously and simultaneously and thereby produce a noiseless engine.

In practising my invention, the portion of the endless driving chain or belt 28 between the driving wheels of the magneto and the pump and the valve, is arranged at right angles to itself as shown in Fig. 1. That is to say, the portion of such belt or chain from the driving sprocket 22 of the valve to a point in alinement with the peripheries of the pulleys or sprockets 26 of the magneto and pump is arranged at the opposite sides of the vertical center line of the engine and parallel with such center line then turned at right angles to itself and trained over the peripheries of the wheels 26, 26 so that any slack or play acquired by the driving belt or chain, incident to the operation of the engine, may be taken up to insure a positive and eflicient drive for the various devices actuated from such belt. This adjusting means, includes a pair of idle rollers 29, 29 spaced at appropriate distances apart and adapted to engage the opposite portions of the endless driving belt or chain immediately above the peripheries of the pulleys or wheels 26, 26. Each roller 29, 29 is secured to the cylinder in such manner as to be adjustable in two directions so that each roller may be adjusted at a tangent to the periphery of the respective wheel 26 whereby slack or play in the belt may be taken up and eliminated. For this purpose, in the present embodiment of my invention, each roller 29 is journaled upon a pin 30 carried upon a block 31 slidable within a groove 32 formed vertically in a plate 33 which plate is provided with an elongated slot 34 arranged at right angles to the groove 32 and adapted to receive a set screw 35 threaded into the wall of the cylinder or water jacket and adapted, when loosened, to permit sliding movement of the plate 33 at right angles to the portions of the driving belt or chain between the valve sprocket 22 and the wheels 26, 26. The block 31 bearing the pin 30 is slidable in a plane coincident with that of the aforementioned portions of the driving belt and for this purpose is provided with a threaded aperture through which is passed a screw 35 swiveled within an ear 36 at one end of the groove 32 and passed through a similar ear 37 at the opposite end of such groove and in alinement with the first-mentioned car, this end of the screw being provided witha knob or manipulating head so that in the turning of the screw the block 31 may be adjusted and slid within the groove 32. If desired, clips 38, 38 may be connected to the cylinder in any suitable manner to receive the opposite side edges of the plates 33 to guide and support the same upon the cylinder. From this construction, it will be seen that the driving belt or chain may be adjusted at all times to take up wear and eliminate any play or lost motion incident to such wear.

From the foregoing description taken in connection with the accompanying drawings, the construction and mode of operation of my invention will be readily apparent and while I have herein shown and described one preferred form of my invention by'way of illustration, it is to be understood that I do not limit myself to the exact details of construction herein described and delineated, as modification and variation may be made Within the scope of the claims and Without departing from the spirit of the invention.

I claim: 1. The combination withian explosive engine including a crank case, a crank shaft, a

cylinder and a piston within the cylinder, of brackets connected to the opposite sides of the crank case and at one end of the engine, a pump upon one of said brackets, and a magneto upon the other of said brackets, a valve casing connected to the upper end of the cylinder and forming the head thereof, a rotary valve within said casing and adapted to control the inlet and exhaust of the mo tive fluid to and from the cylinder respectively, driving Wheels upon said pump, magneto and valve, a driving wheel upon the crank shaft, and an endless driving member trained over all of said wheels and driven from the crank shaft to drive said pump, magneto and valve synchronously and simultaneously from the crank shaft.

2. The combination with an explosive engine including a crank case, a crank shaft,

a cylinder and a piston within the cylinder, of brackets connected to the opposite sides of the crank case and at one end of the engine, a pump upon one of said brackets, and a magneto upon the other of said brackets, a valve casing connected to the upper end of the cylinder and forming the head thereof, a rotary valve within said casing and adapted to control the inlet and exhaust of the motive fluid to and from the cylinder respectively, driving wheels upon said pump, magneto and valve, a driving wheel upon the crank shaft, an endless driving member trained over all of said wheels and driven from the crank shaft to drive said pump, magneto and valve synchronously and simultaneously from the crank shaft, and means for adjusting said driving member to take up wear and eliminate play.

3. The combination with an explosive engine including a crank case, a crank shaft, a cylinder and a piston Within the cylinder,

of brackets connected to the opposite sides of the crank case and at one end of the engine, a pump upon one of said brackets, and a magneto upon the other of said brackets, a valve casing connected to the upper end of the cylinder and forming the head thereof, a rotary valve within said casing and adapted to control the inlet and exhaust of the motive fluid to and from the cylinder respectively, driving wheels upon said pump, magneto and valve, a driving wheel upon the crank shaft, an endless driving member trained over all of said wheels and driven from the crank shaft to drive said pump, magneto and valve synchronously and simultaneously from the crank shaft, and means for adjusting said driving member tangentially of the driving wheels of said magneto and pump to take up wear and eliminate play between the parts.

4;. The combination with an explosive engine including a crank case, a crank shaft, :1- cylinder and a piston within the cylinder, of brackets connected to the opposite sides of the crank case and at one end of the e11- gine, a pump upon one of said brackets, and a magneto upon the other of said brackets, a valve casing connected to the upper end of the cylinder and forming the head thereof, a rotary valve Within said casing and adapted to control the inlet and exhaust of the motive fluid to and from the cylinder respectively, driving wheels upon said pump, magneto and valve, a driving wheel upon the crank shaft, an endless driving member trained over all of said wheels and driven from the crank shaft to drive said pump, magneto and valve synchronously and simultaneously from the crank shaft, and means for adjusting said driving member to take up wear on the parts, said means including idle pulleys adapted to engage the driving member and adjustable tangentially of the peripheries of the wheels of the magneto and pump.

5. The combination with an explosive engine including a crank case, a crank shaft, a cylinder and a piston within the cylinder, of brackets connected to the opposite sides of the crank case and at one end of the en gine, a pump upon one of said brackets, and a magneto upon the other of said brackets, a valve casing connected to the upper end of the cylinder and forming the head thereof, a rotary valve within said casing and adapted to control the inlet and. exhaust of the motive fluid to and from the cylinder re spectively, driving wheels upon said pump, magneto and valve, a driving wheel upon the crank shaft, an endless driving member trained over all of-said wheels and driven from the crank shaft to drive said pump, magneto and valve synchronously and simultaneously from the crank shaft, and means for adjusting said driving member to take up wear, said means comprising a pair of idle rollers, a plate for each roller mounted upon the engine and adjustable in one direction and provided with a groove extending at right angles to its direction of adjustment, and a block within said groove and slidably mounted therein and rotatably receiving said roller.

6. The combination with an explosive engine including a crank case, a crank shaft, a cylinder and a piston within the cylinder, of brackets connected to the opposite sides of the crank case and at one end of the engine, a pump upon one of said brackets, and a magneto upon the other of said brackets, a valve casing connected to the upper end of the cylinder and forming the head thereof,

a rotary valve within said casing and adapt ed to control the inlet and exhaust of the -motive fluid to and from the cylinder respectively, driving wheels upon said pump.

magneto and valve,- a driving wheel upon the crank shaft, an endless driving member trained over all of said wheels and driven from the crank shaft to drive said pump, magneto and valve synchronously and simultaneously from the crank shaft, and

direction and provided with a groove ex- 15 said block at right angles to the path of 2o adjustment of the plate and Within said groove.

In testimony whereof I aflix my signature in presence of two witnesses.

BENJAMIN BLAKE DORR. Vitnesses LOUIS KING, KErrH C. HOOVER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

